{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xc389733237245abb708124d84faf8f7b5a3ac0f09c58dffa5ffa992e1c8f816f",
    "signature": "0x77b9c6a0f4c61bc6d4051ca914e1185528cb222e1af9e57fd54c25800bc6d2283f670ccdcab3832cb6fda780f73e9c4e2900bd1f1731b119b115287b7e99fefb1c",
    "signer": "0xCfbE835B75FD5F0aA89ef2B26E43ea4b5AFa873B",
    "userId": "15292436"
  }
}