{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b2d24fddd92d439893843f5b711c95f82e9d0a88c5c2455484e482749a87d83",
    "signature": "0xb00bedeed5c15aa457b33bce1b9c3fab87ac4b8490ef3a196246baf0ebaa23283dcbd5fb78d428c047d250a25bbba533a73fbfad06b8f5c251535d34275bd39f1b",
    "signer": "0x379F7E947b697d57E9a05D0F04A61A9207990D56",
    "userId": "903438484"
  }
}