{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923480019",
    "entityType": "User",
    "nonce": "0x6f4b8d11b55eef1ce009b4f3a075d2cd7f01a37054f71da3e2fef54f649788b9",
    "signature": "0x526d18d6b2dccbdd0d0a51270237c4f4b8f09366ac32c988259044379b10b38c552ddc93465b71b7e232a4af08ae15ffb56bf5028ca5a7cb0f7c6aca1845c2e11c",
    "signer": "0xaCEa944E637Ed70d0846f218FeF88B644E2AA918",
    "userId": "221007610"
  }
}