{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319150",
    "entityType": "User",
    "nonce": "0x1ba9b6ab2cbd0e5582126e29788698d0b08b557b0aefde38cd2ee9eded3b6fa2",
    "signature": "0x72a9581e69f9d421ecea421d834805c4e5b9d9d109c30f8436d3562cc57b3815082575d80ca054f352bfbefbcdb1942bbb3ce1d97ed44935d3c44d02c7f1015c1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}