{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8ded11a274462d1ed2a3575cd4da0199ef94814652965f70cadd8177d005454",
    "signature": "0x17671eb5d82b10561fe1fb1eb31271f5abe08098c37e694336b2f263c22327bc50f14a111b78534a4fde6243a92b5b80d15192a9fcbcc4c3ad1f8dc7284524461c",
    "signer": "0xEc3e4604b541f08a18515e33Edc7a3E1f4b24776",
    "userId": "321868680"
  }
}