{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142254",
    "entityType": "User",
    "nonce": "0x4e10b2ff1f5ba14704d3e17b4464d3550dac0c843b0c9d3016f18a5a148d8414",
    "signature": "0x8431a67c9d441f47607b147ef886f5e2ec8a6fd3515abb74835a44bb2d5302660aa13a609b13fd0c1bd638f578e6f6b57d8d9e713040b819c87277531a3557ea1b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}