{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xef30d1bc69240cf06c5155fc22e65c7b54a511470d261ca163a26642e4ef954e",
    "signature": "0x05323a267baa478e1076f83d636cbc94223421410e58e8b89a5202609bc7a6b90c34435ce3daa55322173080a15feb5b7d8b8bf75e697a33b2d51e3cd65e3d7d1b",
    "signer": "0xa0e74dFCE6fB03B08b3E1CbD8FcF35E9aA42fA19",
    "userId": "158522887"
  }
}