{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x2d03c05be71377eb1d5e94b40bdc93a1972b7717e0fb394e8c5b6d7c91eed336",
    "signature": "0xa58e8199a455df278015a3b2c84506610577a0ad5591a3af7ab8d0020c65836e40f97d0900580656cfe806135929bbd9b1440e5d076fbf6461fb9207c7f77a501c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}