{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964899801",
    "entityType": "User",
    "nonce": "0xd4c3d19d16b22bd6c62ffd7fed743cae3cb844e245d043dac2913f3ffafee559",
    "signature": "0xe4277ae437b666b2f4e30dc2a232d9238ee78a7ab0162dc73813193d2fec170549bb9f1a17841851eed93122427a6025ce632a309502400a555bcdea1488fc4e1c",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}