{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0x479ff8f3e5477f269a070a98f2f105d489b3ebeb9dc0f62b9fa188261db6dcb9",
    "signature": "0xe173ebddeffcc55f46d9f53173f74c505c60253dda6a6ba50dd803aa741d51e467f8de0d16b3b41df7746ce00e95218cb702669f0023dcb67d0b95e70486cc681b",
    "signer": "0x12465F46a81eDfE760a7326D21Bd9B2022bc4a8B",
    "userId": "575702759"
  }
}