{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2e0f990ce17e64dc2254c4eab3fd32b7497753082c95b688ce292765e8a8d6cb",
    "signature": "0x2c24838044ff1f55cc7f6af89c84bfa032a874e5d4ef2836b49209548fb01340272e3ecac83c5ce32c9b0bb1d3da095084e882884a5bfa6bc84e0dd50c1d6c351c",
    "signer": "0x8231D08B116f5bd5Cde59B87753EE0A51035CBC1",
    "userId": "740227906"
  }
}