{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3835112e0fea9110b300c2392601f52f6d853e4312a81eaaea96d9983cf58bdd",
    "signature": "0x698ec5faf0de7203f811fa7ca9a2a9dead0e661e97979fabb1cf89e1cbf2f719073d3eda32aa32b713c3eadf912f820ddd250658f3888d32c66e65418bb9e8e71c",
    "signer": "0x6494E34328fdf16D4d991c70AEEf7B288436b4CC",
    "userId": "477865186"
  }
}