{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139031",
    "entityType": "User",
    "nonce": "0xef5733c2e69fbe4215bae78ae9eee5e297196a4d185db03a4002d7cb6baaaa43",
    "signature": "0x33f2a51b577b873350030f395f6f63693d710e310cefe7ff5253be3bf4a31cca0095ffe9e6c72cb74f4f012483f125b7172430db3dbe2c320d51c05944e06d6e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}