{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf85409223794bb3a28471505f674a4f51668aecf90cf77894773fb234faee3c",
    "signature": "0xad3a0f8c1d3983965322e48133c5afaee36ec0183487ada959faa69d5736c70805044a3fd233d50014eb26f9b92872487943c89c0fbec387e8b4fbd2486eef2e1b",
    "signer": "0x095defda4b6508123083b4C285d471d92EC2aaA3",
    "userId": "345916464"
  }
}