{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "762358",
    "entityType": "User",
    "nonce": "0x3f8983fa9a0d52db03d8f3a370cab06523dc3a2ffba10c65b6e6a23a167e6439",
    "signature": "0xdc199a1bbd84f76685e1a0ad47b63ba0e09323b5f1afc9610c83333f19c3e0727c6a92a8ac527c78f5d9ebcb67c0a5b2fcd60bcb001f23ffae8f90c6c50fc5451c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}