{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc8fcb841a7cd82bce0e2f02cff22c01803a9b5ec8c44a3b7eede9212380b0214",
    "signature": "0x7a3ab45a0e71790a48a8502dfc4e9f137eea00f8cf90271cd52175a191acb28d77111e2e0bb9fa517b3b263a65e22a114cd7cb00248da7e0b48ed868e62e22361c",
    "signer": "0xe27012eAA9D36ad85dB88Fd0D42D0b5db3Ab31A2",
    "userId": "318322201"
  }
}