{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299215",
    "entityType": "User",
    "nonce": "0x70bf5d7f9e6d24fabacc2e65cff11db674b4e25ba34025f7fe1ef4258ec5df09",
    "signature": "0xf29200a308f906ce1fdb0eeee1c52279dc27c569e3cd263eef8099d3f95c730937c2fc91ae630df2d17e01cef3c5759700aa252a988e73d2e1c9111c5de93eac1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}