{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a0e8996cefb704cd8091c89be3fd049595f8cac5e979f6c25664ba6d50ea173",
    "signature": "0x79ef2a2662510255a2c614d64cab0eca60eb8f31d4421c4742238250a2c811110e65165281b78124b6d91223055238163a3885595effd770b54e15bc74094c641c",
    "signer": "0xd88AF38E886fdd37E0Af3d4E746CFcb2a4377cc2",
    "userId": "520355522"
  }
}