{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0x384663385a0268c27c8989e591cd0ad2eee5dc5622546078b43cd0202c27f196",
    "signature": "0x3b234d724c115069ef4857b755ecc81ce58a29165931d33e85cee48b628c988224d00815a20ccb7694efacf17d2b6bb581a4b013ea3c9085b925a5e8a7639b471c",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}