{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190351",
    "entityType": "User",
    "nonce": "0x6f49cef88993cf6271b82003e64d084cbdd6e0153c2c94bd058d4b8dbbb2a37b",
    "signature": "0x8aae61c82375945f263a560a24821428fe5421d760ea8285fe1da2e163f087f74fc994f91bde8e9bdf63243ff0579573ec448cefe75bc9d64eba246e5cbdb6501c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}