{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16497",
    "entityType": "User",
    "nonce": "0xaa8a8b5a617be99506bce94290c2fb79422984208a0e604ee72c823855b2d2b4",
    "signature": "0x5f6002cfc1a2d2e20a029510f992c14b4342c0de53188a6ed395953187bac30e0bc668b8e163ee42bc0e71d950aebeb7bbf843e7941fa75f0101c2615c1316821c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}