{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "385137",
    "entityType": "User",
    "nonce": "0x7a44719e90e4983fc1827facad91c50bfdefb679e9380f0680736d6e710d1aff",
    "signature": "0x772570abeba79b4299a4b9e8079c0e4e20f777e92050ea117126092461bc12e47f7a3c70e6b9184af62b88fd55f10c00a3b0be967303edb7cf1768d0d4c3ee621c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}