{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x6a01ba0274960d1542a0a336a96242286ebdc42d0c40bec196253027680b849f",
    "signature": "0x15c7913f7c1b9e4d50b3deced7a231a3c6944a76fa34c81fc1717d672bb9472a16d3448ebea70b4ebef91ad7a611f5499bf87131b20cc9c24913c74f7391047c1b",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}