{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x53faaaaeff6fa251bd7f5dec737491b315bec64750ca4a942d8352abcea77580",
    "signature": "0xae7c367ca8197f49c5fd364120a0924bad18f32beefaed24ca939785f9421e01570178eabfd00eeba18ca5da30f30d4110648b73cc9e7a9e0a5a62ad3b474c4b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}