{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7566437ec3ed931591a6a6ebd63af64c027a6156a6b4dee4c233888056bdff33",
    "signature": "0xc1db593a410f330efd2532980c1621c03c314da6ec4d040cfb96f4fd778901f238b4164e24e1c6ef40b32e67790894372afd7ed48de675da742c45d9541cad461b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}