{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9fef3d6a7747cd1020183b95cb79532eed2042007bf2f1f1458cfef73f89b54a",
    "signature": "0xe4a59b6d6e193e376be67bf3d818fcb4ce235b2becf1730d6ae390b9be571af5388abc6a7eb5e32a3e1228e62973754067364dcf0030023eeb1f5a6eaae8a9171b",
    "signer": "0x51da829dBF72c8f3D38ed4Efe9E50ECEEA666C62",
    "userId": "832024574"
  }
}