{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "87564",
    "entityType": "User",
    "nonce": "0x3b5fcc86fd1a0bac42c90c37f1b786b4773a20d7cf2699d0233ee0ec2a418c0b",
    "signature": "0xf6e9042e1cb10963269682760c9a7e799ad41db056fc259ef8463b9bb210f899037b0346da37d6ced60c9071f1f4949188cc85ed0fd92c9096de9b29866b1c6b1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}