{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0x15d8ea8a37b533143110f16b3a599a7d09ee53e0a5a31a9b6753860ae4d8c10f",
    "signature": "0x74a15a30fb85587168e63aa5412fb178f72a4448749637e86a1cd12d5827ebd6094b945f3e2b0817ea2ba517441fc75e7c3eab3ded956a0c4eff1ea93beec1b61b",
    "signer": "0xea69253B2C33054a4FA2D56471c9ddB8E0584B10",
    "userId": "413014972"
  }
}