{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13dcdbb37c6333e40502b622a2db6a505cc524a7875e1014f679a0402558fbf7",
    "signature": "0x0e59436ea3b891c69e891cc1139c2cc034ed103a2a0b0cbb7dd7ac3496a64a567aa3eb295022149afb9fbd3b999146eb4bc754134059147e4026b7ec1f5b5e3f1c",
    "signer": "0x6C3dfBb34F175eC157f17632F02a690cFC044641",
    "userId": "30425633"
  }
}