{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04ac980e6bef6832a307c700879849992959d7904d5361a98e9a387eddf1ec41",
    "signature": "0x00e16446f4d6744778307a6bf42d5313808a08e3e6567e265ac7b602419ff17c0caa9c0e0e293af042863cb150cbb390121ff26038cd99fe4b169e60d5fc85031b",
    "signer": "0xf36724d56CD406391E8A59Fb8Cec8e43deaafd72",
    "userId": "976259937"
  }
}