{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x8628dda6cff676cb926bbd58c09a952afbb0f44d69cde8ead83e87f8f8f0ee52",
    "signature": "0xdd3919201315a5ec8c07497252cc56709623e2cd0029f4492767fc22e1350be4315bf3d5a9aa0f3eb889303e0d89819ba018ae77597829bdcdd6123349fe27731b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}