{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881081",
    "entityType": "User",
    "nonce": "0xd2e87746aa713ce3f897bb648f090ab30e812481d2a242bc2c9ff44bbbbdd49c",
    "signature": "0x7adc2db65076e171e1e4c6b8ab2cbedf05d9660d26d6dab7baf1e97b35cd3d0972fcda26ab4c136cae325f807287e60b374e8c29404327df2b947dd03ea4f9381b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}