{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0xf85d70a58bad0b901ad47ae7c13a3373e12b55123ddd1d35cce355a56567d4ae",
    "signature": "0xd66b67ca653a71ee88fd166c59dfca84e0006d155f753dcac703032834ad0344177d9e75a3fddcbd2ed772c7fb411632c265ed1cd73a643449f5e759f64c2d6c1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}