{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378559189",
    "entityType": "User",
    "nonce": "0x48e6b11378bce378eba4e1ee85a1336d3dd2f16e3fd1eb3c0b683fc39f55402e",
    "signature": "0x758018c9e76234d138aa17149ffce2bca8434c14261f0a38829bbe81e5f7fa3f7434f0c746bcdb9068677d3189fbcbd14ecabdee8d72f413e6e7fbe03d71cd581b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}