{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5568",
    "entityType": "User",
    "nonce": "0x0641e2ef36b1d0ddb4b61ba2d65ad4b4f6c36a849095a13b89c15d73725332c2",
    "signature": "0x9d8aac176194264e1c26347b325fff9e1a0e5ed098ce3bc85081ef993c18e7c74a5447d7cf334e72149a1445e283988a7165ab8fc6c4fcdeaa5026c93ec0b3821c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}