{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f05dc381eff163cbefe049eca03e8a448735f8d9c972960978f07aa16b907d3",
    "signature": "0x261a752ef9026a64d1fd42e3290beaf73c30b271760088272e3e9b19a5f16356099c561c62874b40a9f38caf4b5813a650c73483f72e8daec875745eb78a11d31b",
    "signer": "0x2676F2C8BADCE334f8F1A71dc322e54536795266",
    "userId": "574850627"
  }
}