{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "719004021",
    "entityType": "User",
    "nonce": "0x1f230d54214bd4b676f992578087b5418bec230f576b59b426b4a57d2dfe6638",
    "signature": "0x93425bbabef9a37e34ec6fb104b07b14be5b872fb690f9b5bd3f20a917fa2c9e20ff5dae7c91b011efe294d0fa7fe65b41578557606111d02bf14ba60cadcb091b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}