{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x500a3d932145308960b16e0c322cb376ac9d1155eaf57ac39155c170ce76b173",
    "signature": "0x23e762d85e138904a5fa2533ad21b38017dfce1af415a3ee00d46f42dc54a8c74630720eb30f81377b1df498c0ddc4c735ecb53b791c96aaa1c24edfba5a65011b",
    "signer": "0x4307A71D1986349280B8e946cBafC105F323BF97",
    "userId": "814033275"
  }
}