{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "515515570",
    "entityType": "User",
    "nonce": "0x3a682412d0ee496ee35ab1e162ee45593e14aa8bdcd533632da549f9f0b8adb5",
    "signature": "0xe6f279932cb5c6e0bf7cc91c9645c8922abaea06ff9df85c129ed8270e20a7a20a7fd40ea84166fade2265904bb3b194c20efd3b7a0f4b12dbb64fda229cefcb1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}