{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134623867",
    "entityType": "User",
    "nonce": "0xd241e9766dbde4a47441b3abc187ae1a6c57baf0a50fd33c04fe9d2599a7c361",
    "signature": "0xd20cd0f92acb2eeaeb9e7bb13e90e245df384dda6e4fdbd68e45ffdb65be7b4e37be7a85dbabbedf345620d3cc66a515b828b5c8a298924526c657c2f154f9a91b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}