{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122997",
    "entityType": "User",
    "nonce": "0x1637c387b524a7224ce9615c6c5ed99dfaa46df63f784e30fb53ff5a58f49df6",
    "signature": "0x21d7ce064cfe08b94ebce9ce4803c9300517201418338c162bdbdbd8bca527e6471bab6e8591dd41d4aa973f7c2eb25c747302edcb2b38143cc5a64f348bbc531c",
    "signer": "0xfe73cd4bc8E45c5aC794633336A85475bD51b0f2",
    "userId": "284924323"
  }
}