{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0x48edd2e6e637f392132b5d721818f962f2864c3ff8269affbf8e785684f94705",
    "signature": "0x92464b0a2b4d8e8a958b8d7dd1dc60f3228ca93db199e1561c7cf4de6ca5160d47816fef8617f8b68d57178d9b1b3f168139779129819cb264735f7e5e78ad421c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}