{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d6eb16d233216f83dc18d5541ed5ca5f46de4d2d604a2971b81432e00f27a11",
    "signature": "0xf212b95f281b7b67945e01912b7bb6e964a1f8564060bf48f6bf30ff4ff2aa38210ff2dc3a547423037a2303dc6697c9687de93ff173c120cc1e4fa5e97382ce1b",
    "signer": "0xE185670778F107B30c9B5FF0F7961e6E08260A21",
    "userId": "243961193"
  }
}