{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508547804",
    "entityType": "User",
    "nonce": "0x5f073b5bf797a044f6992202526b8114d0f634ec07ec1896ecb0ba0ea6e82193",
    "signature": "0x51d185957e7d2b0a6ed4fcb59245ccbb35308ff758197a2de462a9e73d0ba34e022bc82972f5985bd70e8d92072b712c0d5a165c62fba24b38470e382d07d1a81b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}