{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150712",
    "entityType": "User",
    "nonce": "0x1d8b890e2ff6a206a9c00a69a6ccd8a768aac2e595655dfed4fd2c3f7b37ed46",
    "signature": "0xffff1c4e29843cc2dfb9313f105db7bb1c758af82beaa0c8501d27b9075e325f46d1d619072d74f45875c1a831191feb7067abfef54613410b4b20dc56ecda181b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}