{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "712641230",
    "entityType": "User",
    "nonce": "0x00574f0cb48f172e4c49ae6e097a064c3417c5983eb6b91d4bf2e70e1e1b0e0f",
    "signature": "0x332b66e2425a1aa171b474793081691db752d2d59b39b14a05182810e78668501fd6de0296edb59f15f4aba7af7c4bb1be02c485cf6dc56db0023442ed3712541c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}