{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "170021",
    "entityType": "User",
    "nonce": "0xa7e6b01713edf51828943de383cc799ef285b488af3b910a1a2486527bc5f32a",
    "signature": "0xed97de22506568c6edfcc5e831e0bac9322d66ad59a80a3a9009b82622f4c25a416a6dc2ed0bc80d39fe74ef7cd189d2f8bb40ebf28fb8e433d5092fc6c28e081c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}