{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350268",
    "entityType": "User",
    "nonce": "0x2d1a251486df09c54619956b3e6bad42de4948a843c9dff4864d2f50567f1ec7",
    "signature": "0x9bcdb8f3cabe34e7810ac0ecba8f6de293dc9ea67ec545e533b6b4f1a8b0fa84708b509323d2087deba5ede2bcdecae3754084d94a0d4a53603eb0e0164476021c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}