{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7ac2b741abb3a61bf04aaecd7041a79bfff67736c85ecc0bee3061cd40ab4e0b",
    "signature": "0x974031616fc7a7bf5b7ca4c6ab1804414a7a9000566b0d51c011dad0bd57e119078cf21b762cb368367b1a0f8fb7f69796504061a7f15b507badeebecc24b92a1c",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}