{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x20e77ed6ed58b89afab9cc7453d31c90402425030d21c6aff6e1081989a74e04",
    "signature": "0xb3200d33c36c3181d4315415d7acfbafccef7ed49505395c6c1615718dfaabdc22c99deffc75db65df5d5df155cde9044099ffd2df09ffd63f541d77a32961431c",
    "signer": "0x661038958CaBEA62127d3E61af25e811a6a1538A",
    "userId": "7339292"
  }
}