{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1674010",
    "entityType": "User",
    "nonce": "0xfe55978d0e9e384613f43cce1a06689af1efd814a325fe588c9346e8eea5e604",
    "signature": "0xbb564656bf4b7473c73b7e8c831d0bb14e23778952ef3574f5f54a4a6e8b372b7f9ad60d9a33729bcf731a6ab7783e0b17eb0021275b656854b5aa13b6d252101b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}