{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x62f85d10c3db8c1e359b0fce1cae30fd58846490f72e8303794e5942d99f62ed",
    "signature": "0x14811c6b5698be1c4910a4bde77ba63abcd22b1bf1bf78ec7d591c9f3894ddda58863e27cb8415708f00379fd5b786f6afd17c2d4395bc9644210beb14e6a4491c",
    "signer": "0xc4b12DEd7d7039ADa37F4140dE01D41C9313b393",
    "userId": "658075403"
  }
}