{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306721",
    "entityType": "User",
    "nonce": "0xe4aec7fe55fa9c3358f74ff7003700bc1eccac37c592d18da61d26b16566b671",
    "signature": "0x85ebb597a8abf68debf637afea2756733715814604d75c13b2ce6fb58b647fbd51ae7dd61959e0733909fdfc955db0c43df4d9c3f5fc85749ca6d38ba5239e6b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}