{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8bd3eed44fbb6ddc751bca63b0dc8ebedf462d8319ebe5dd861e4e828ffc2338",
    "signature": "0xbbb4d5b60fdf8dd8f322dba625d384a4cfea86841c47a62241a54af1e5801a64538ebe736cae4dd3b4a0ecb49a0e95a26ec036b8a9213678426c5d39be6c43e71c",
    "signer": "0x9172675bda2A216B583514ff7d62dcbAe753943F",
    "userId": "47399103"
  }
}