{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c982c798b90d9009fbf059c11e20e9cd5aabb6901bc86f7878e28d4cc21be10",
    "signature": "0x2ac30b4f9b48351263ddec18c293cb9fce461d719c6aba308e99c0a966d5f59d1c347597343bc1e46a9ea596bacf6a309b374f057a2ad976960c4809bdef20d41b",
    "signer": "0x5Ccf6C1aeA6F23a887D4a4Ac71f77Fc792762c55",
    "userId": "370763624"
  }
}