{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "948584098",
    "entityType": "User",
    "nonce": "0x8377e6b23af5954c7d89292334a8f800514063a13b1bec9984568d81d64a71bf",
    "signature": "0x18d523f4dae0582684a3235fbae6a4f6b0489a2c68a66c36f7873a45cd2f0fff24a7659bdc8fc5aaf27670b387b00475a793bf8923050162532e5a76e7b9c2491c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}