{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5da138a946e39c5fd75f40995d50c00a26246ce47787ac0c86e49f0cbe0526dd",
    "signature": "0xaf7276b8ab88d53506dd6753474ff020f544fbd5692530e13daf775b5f4675275880d6467b01dd135fbce210cf19bfa9c771a5936ce9062d6963d1754b288d971b",
    "signer": "0x7334Fcbeb0A727477cAC9CC4B0ADc9bd7bBE97f0",
    "userId": "190110950"
  }
}