{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54872",
    "entityType": "User",
    "nonce": "0x27cc558db436f4870ce9be90baecb6bf9e72f82cda9558322c404c5a2a41dc20",
    "signature": "0x9684de0db3941583b6392eb589039b4f2232068e9d0ca8751a8eef4dd82385542d03c0c9c9d0cac0051c82ada23ffef79837a06604afa152b791aebc6664321b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}