{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x01816de3aec632a6e0c569ec8dc2e5388339a91244583246a81fe939938ebd56",
    "signature": "0x4042da616dcbbb28a642001b986d3f73a89005d813254f595d5933be95a86d6071bb4507120f2c51fb2b8e1c793004501db0e37206c640b59acb026f67a1fcc11b",
    "signer": "0x091F85C05d1DA4883482C2fA777F8eB948ebCEEF",
    "userId": "909371035"
  }
}